Crockpot Boursin Kielbasa Pesto Farfalle: 5-Ingredient Dump Dinner

This is the kind of dinner that saves a busy weeknight: smoked kielbasa, bow-tie pasta, fresh spinach, basil pesto, and two melty cheeses all go into the slow cooker, and hours later you come back to a bubbling, creamy, ridiculously flavorful pasta that tastes like you spent the day stirring.

The kielbasa caramelizes at the edges, the pesto turns the sauce a beautiful green, and the Boursin and fontina melt into a velvety coating that clings to every piece of farfalle.

This slow-cooker pasta brings together the smoky richness of kielbasa with the bright, herbaceous punch of basil pesto and the luxurious creaminess of Boursin cheese. The farfalle soaks up all those flavors as it cooks, while the spinach wilts into the sauce, adding color and a gentle earthiness.

It is a one-pot meal that requires minimal effort and delivers maximum comfort. The key is building the layers in the right order and letting the slow cooker do the work. When you lift the lid, the aroma of garlic, herbs, and melted cheese fills the kitchen, and the first scoop reveals a glossy, cheese-stretching tangle of pasta and sausage that is impossible to resist.

Ingredients

Why this recipe works

The slow cooker creates a gentle, even heat that lets the flavors meld without constant stirring. The kielbasa, already fully cooked, slowly warms and caramelizes at the edges, releasing its smoky juices into the sauce. The pesto and cheeses melt together into a silky emulsion that coats every piece of pasta, while the spinach wilts and blends in, adding color and a subtle freshness.

This method is forgiving and hands-off. Unlike stovetop pasta that needs attention to avoid sticking or overcooking, the slow cooker maintains a steady temperature that cooks the pasta evenly.

The layers are designed to prevent the pasta from clumping: the sausage provides a base, the pesto adds moisture, and the cheeses melt over the top, creating a sauce that is both rich and balanced.

Notes and substitutions

Choose a high-quality smoked kielbasa, preferably one that is fully cooked and has a good smoky flavor. The diagonal slices increase the surface area, allowing more caramelization and flavor release. For the pasta, use farfalle or another short shape that holds up well to slow cooking, such as penne or rigatoni. Fresh baby spinach is best; it wilts quickly and adds a pleasant texture.

Prepared basil pesto works perfectly here, but if you have homemade pesto, even better. Boursin cheese is the star — its garlic and herb flavors are essential.

If you cannot find Boursin, you can substitute a block of cream cheese with added garlic and herbs, but the texture and flavor will differ. Fontina melts beautifully and has a nutty taste; low-moisture mozzarella is a good substitute.

• smoked kielbasa: Smoked turkey sausage or andouille sausage (adjust heat to taste).
• farfalle pasta: Penne, rigatoni, or another short pasta shape that holds sauce well.
• fresh baby spinach: Frozen chopped spinach, thawed and squeezed dry (about 1/2 cup).
• fontina cheese: Low-moisture mozzarella or provolone for a similar melt.

Equipment

• 6-quart slow cooker
• Cutting board
• Chef's knife
• Measuring cups
• Large spoon or spatula
• Serving spoon
• White dinner plates